Crystal structures for canonical Grothendieck functions

Crystal structures for canonical Grothendieck functions
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规范格罗滕迪克函数的晶体结构

DOI:
10.5802/alco.111
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发表时间:
2019
影响因子:
--
通讯作者:
Travis Scrimshaw
Travis Scrimshaw
中科院分区:
--
文献类型:
--
作者:
Graham Hawkes;Travis Scrimshaw

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我们给出了多集值表、钩值表和值集表上的$U_q(\mathfrak{sl}_n)$-晶体结构,它们的生成函数分别是弱对称、正则和对偶弱对称Grothendieck函数。我们证明了结果同构于(可能是无限的)最高权重晶体的直接和,并且对于多集值表和值集表,我们提供了显式双射。因此,这些生成函数是舒尔正的;特别是正则格罗滕迪克函数,这是以前不知道的。我们还给出了Hecke插入的推广,将对偶稳定Grothenieck函数表示为Schur函数的和。
We give a $U_q(\mathfrak{sl}_n)$-crystal structure on multiset-valued tableaux, hook-valued tableaux, and valued-set tableaux, whose generating functions are the weak symmetric, canonical, and dual weak symmetric Grothendieck functions, respectively. We show the result is isomorphic to a (possibly infinite) direct sum of highest weight crystals, and for multiset-valued tableaux and valued-set tableaux, we provide an explicit bijection. As a consequence, these generating functions are Schur positive; in particular, the canonical Grothendieck functions, which was not previously known. We also give an extension of Hecke insertion to express a dual stable Grothenieck function as a sum of Schur functions.
DOI: 10.1016/j.aam.2017.11.006
发表时间: 2017-07
期刊: Adv. Appl. Math.
影响因子: --
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DOI: --
发表时间: 2020
期刊: Séminaire lotharingien de combinatoire
影响因子: --
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